JMP has the best plotting facilities I have used, but a version for Mac OS (or Windows for that matter) is prohibitively expensive and the free Graph Builder for iPad requires owning an iPad.
Will like to request a Graph Builder or a simplified version of JMP (e.g. JMP-Lite) that would have at a minimum the graphing functions, the scripting and ability to import/export excel or csv files. This could be offerred at a lower cost than the full version of JMP.